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Preparation method and application of inorganic/organic composite hydrogel driver

A hydrogel driver and hydrogel technology, applied in the direction of manipulators, manufacturing tools, chucks, etc., can solve problems such as difficult precise control, complicated operation, and limited cycle deformation, and achieve the effect of fast bending rate

Pending Publication Date: 2022-02-08
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Hydrogel actuators with double-layer structures tend to delaminate during practical use, which limits recycling and greater deformation
However, the design of a single-layer asymmetric structure usually requires the help of complex experimental conditions such as electric field and magnetic field, and the operation is complicated and difficult to control accurately.
Therefore, how to easily and rapidly prepare hydrogel actuators with excellent performance is very challenging

Method used

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  • Preparation method and application of inorganic/organic composite hydrogel driver
  • Preparation method and application of inorganic/organic composite hydrogel driver
  • Preparation method and application of inorganic/organic composite hydrogel driver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Inorganic / Organic Composite Hydrogel Actuator PNIPAM-SiO 2 Preparation of:

[0027] Step (1), preparation of hydrogel prepolymerization solution: add 1.14g XLG type synthetic magnesium lithium silicate into 50mL deionized water and seal and stir for 2 hours to obtain a suspension, and simultaneously add 0.226g 1-hydroxycyclohexylphenyl Add ketone to 10mL methanol to prepare an initiator solution, then add 5.65g monomeric N-isopropylacrylamide and 0.5mL initiator solution to the suspension in turn, stir for 2 hours at room temperature in the dark, and finally pour into the solution Introduce high-purity nitrogen gas bubbles to remove the dissolved oxygen contained in the solution to obtain a transparent (N-isopropylacrylamide)-clay hydrogel pre-polymerization solution;

[0028] Step (2), the preparation of inorganic dispersion liquid: the SiO of 1g 2 Add in deionized water, ultrasonically disperse the inorganic particles evenly, and prepare a 200mL dispersion with a co...

Embodiment 2

[0032] Inorganic / Organic Composite Hydrogel Actuator PNIPAM-TiO 2 Preparation of:

[0033] Step (1), preparation of hydrogel prepolymerization solution: add 1.14g XLG type synthetic magnesium lithium silicate into 50mL deionized water and seal and stir for 2 hours to obtain a suspension, and simultaneously add 0.226g 1-hydroxycyclohexylphenyl Add ketone to 10mL of methanol to prepare an initiator solution, then add 5.65g of monomeric N-isopropylacrylamide and 0.5mL of the initiator solution to the suspension in sequence, stir for 2 hours in the dark at room temperature, and finally pour into the solution Into high-purity nitrogen bubbling, remove the dissolved oxygen contained in the solution, obtain transparent (N-isopropylacrylamide)-clay hydrogel prepolymer liquid;

[0034] Step (2), the preparation of inorganic dispersion liquid: the TiO of 1g 2 Add in deionized water, ultrasonically disperse the inorganic particles evenly, and prepare a 200mL dispersion with a concentra...

Embodiment 3

[0038] Inorganic / organic composite hydrogel actuating PNIPAM-CaCO 3 preparation method

[0039] Step (1), preparation of hydrogel prepolymerization solution: add 1.14g XLG type synthetic magnesium lithium silicate into 50mL deionized water and seal and stir for 2 hours to obtain a suspension, and simultaneously add 0.226g 1-hydroxycyclohexylphenyl Add ketone to 10mL methanol to prepare an initiator solution, then add 5.65g monomeric N-isopropylacrylamide and 0.5mL initiator solution to the suspension in turn, stir for 2 hours at room temperature in the dark, and finally pour into the solution Introduce high-purity nitrogen gas bubbles to remove dissolved oxygen contained in the solution; obtain a transparent (N-isopropylacrylamide)-clay hydrogel prepolymer;

[0040] Step (2), the preparation of inorganic dispersion liquid: the CaCO of 1g 3 Add in deionized water, ultrasonically disperse the inorganic particles evenly, and prepare a 200mL dispersion with a concentration of 5m...

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Abstract

The invention relates to a preparation method and application of an inorganic / organic composite hydrogel driver. The preparation method comprises the following steps: (1) preparing a hydrogel prepolymerization solution; (2) preparation of an inorganic particle dispersion liquid: preparing the inorganic particle dispersion liquid, and uniformly dispersing inorganic particles in a dispersion medium through ultrasound; and (3) preparation of the inorganic / organic composite hydrogel driver: taking a certain volume of inorganic particle dispersion liquid, carrying out vacuum suction filtration, then pouring a certain amount of hydrogel prepolymerization liquid onto an inorganic particle layer obtained by suction filtration, and then carrying out in-situ free radical polymerization reaction by ultraviolet radiation to obtain the inorganic / organic composite hydrogel driver. The inorganic / organic composite hydrogel driver disclosed by the invention has a relatively high bending rate, and can be applied to the aspects of underwater intelligent robots, microfluid valves, holders and the like.

Description

technical field [0001] The invention belongs to the field of flexible intelligent drives, and in particular relates to a preparation method and application of an inorganic / organic composite hydrogel drive. Background technique [0002] In nature, shape deformation (crawling, swimming, flying) in response to external stimuli is ubiquitous and coordinates the survival of organisms in complex environments. For example, inchworms crawl by bending / unbending shape changes to achieve radial contraction and axial elongation coupling of the body to walk forward. Inspired by the shape deformation of living things, a variety of soft actuators based on soft materials have been extensively developed and designed. Among them, hydrogels are considered as promising candidates for soft actuators. Polymer hydrogel actuators are soft actuators that can produce volume changes under external stimuli (temperature, humidity, pH, electric or magnetic fields, etc.), and have great potential applic...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08L33/24C08K3/36C08K3/34C08K3/22C08K3/26B25J15/00
CPCC08J3/075B25J15/0023C08J2333/24C08K3/346C08K3/36C08K2003/2241C08K2003/265C08K2201/005
Inventor 刘爱萍樊转转许为中吴化平
Owner ZHEJIANG SCI-TECH UNIV
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